"The Brazen Android"
This 1891 science fiction story explores the legend of Friar Roger Bacon's talking Brazen Head. The writer is a bit over-idealistic on certain historical subjects and extremely biased against others, which actually is pretty amusing in the context of the points he's trying to make. (For example, few today would claim that true holiness is impossible to pre-scientific societies, or that illiteracy makes one brutish!) But once the story really gets rolling in Part 3, the story combines both science fiction and fantasy into one very interesting tale.
Source Atlantic Monthly, vol. 67, issues 402-403 (April-May 1891)
William Douglas O'Connor was Walt Whitman's best friend. He began writing this story in 1857, but it wasn't published until after his death.
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